[jira] [Updated] (DRILL-4552) Treat decimal literals as Double when planner.enable_decimal_data_type is off

["Sean Hsuan-Yi Chu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-4552?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Hsuan-Yi Chu updated DRILL-4552:
-------------------------------------
    Summary: Treat decimal literals as Double when planner.enable_decimal_data_type is off  (was: Treat decimal literals as Double when type inference is taking place)

> Treat decimal literals as Double when planner.enable_decimal_data_type is off
> -----------------------------------------------------------------------------
>
>                 Key: DRILL-4552
>                 URL: https://issues.apache.org/jira/browse/DRILL-4552
>             Project: Apache Drill
>          Issue Type: Improvement
>          Components: Query Planning & Optimization
>            Reporter: Sean Hsuan-Yi Chu
>            Assignee: Sean Hsuan-Yi Chu
>
> In SQL standard, decimal literals (e.g., 1.2, 2.5, etc) are decimal types. However, currently, Drill always converts them to Double in DrillOptiq.
> Since they will be converted as Double in execution anyway, at inference, we can treat them as Double to help determine the return types. 
> (The current behavior is "not to do any inference if the operand is Decimal type").



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